CN201546771U - Low displacement petrol engine exhaust cam axial-type line - Google Patents
Low displacement petrol engine exhaust cam axial-type line Download PDFInfo
- Publication number
- CN201546771U CN201546771U CN2009202177532U CN200920217753U CN201546771U CN 201546771 U CN201546771 U CN 201546771U CN 2009202177532 U CN2009202177532 U CN 2009202177532U CN 200920217753 U CN200920217753 U CN 200920217753U CN 201546771 U CN201546771 U CN 201546771U
- Authority
- CN
- China
- Prior art keywords
- valve
- cam
- breeze way
- angle
- peach
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a low displacement petrol engine exhaust cam axial-type line which comprises a basic circle and a cam peach, wherein the circle center of the basic circle is overlapped with the radial center of the cam peach, and the cam peach comprises a starting angle section, a starting buffering section, a complete elimination valve gap, a valve starting section, a valve maximum lift range, a valve closing section, a closing buffering section and an ending angle section in turn from one end to the other end. The low displacement petrol engine exhaust cam axial-type line is characterized in that the radius of the basic circle is 15 to 17mm, the maximum lift range of the valve is 7 to 8mm, and the buffering section life range is 0.2 to 0.4mm. The low displacement petrol engine exhaust cam axial-type line enables a cam shaft to have high performance per liter, high compression ratio and low oil consumption, enables the flaying escape velocity of the cam shaft to be far higher than the highest rotation speed of engines, eliminates the flying escape phenomena, prevents the cam to have abnormal abrasion during the using process, and can greatly improve the overall machine performance.
Description
Technical field
The utility model relates to a kind of camshaft molded lines, particularly relates to a kind of float petrol machine exhaust cam shaft molded lines.
Background technique
The quality of cam profile design has tremendous influence to engine performance.Cam profile is by camming movement curve reasonable in design, and the switching of control valve cooperates bent axle-piston motion inlet and outlet, makes full use of air inlet inertia, improves charging efficiency, thereby improves the performance of motor.Bad cam profile design can cause the motor charging efficiency low, and power, moment of torsion are low, insufficient lubrication between cam-tappet, part inordinate wear, severe patient even can cause distribution device to occur flying off and the air valve drop rebound phenomenon.
Reasonable optimizing is not carried out in the cam profile design of using on the existing put-put, and HP, hp/litre is low, oil consumption is high, compression ratio is little, performance is not good.
Summary of the invention
The utility model is finished in order to solve deficiency of the prior art, it is high power per liter, high compression ratio, low oil consumption that the purpose of this utility model provides a kind of camshaft that makes, make camshaft fly off speed and be higher than engine peak speed far away, elimination flies off phenomenon, avoid cam inordinate wear in use to occur, can improve a kind of float petrol machine exhaust cam shaft molded lines of complete machine performance greatly.
A kind of float petrol machine exhaust cam shaft molded lines of the present utility model, comprise basic circle and cam peach, the described basic circle center of circle overlaps with described cam peach radial center, described cam peach is followed successively by the beginning angular segments, opens breeze way, eliminates valve clearance, valve opening section, valve maximum lift, closing flank fully, is closed breeze way and angle at the end section by an end to the other end, it is characterized in that: described Base radius is 15～17mm, the valve maximum lift is 7～8mm, and the breeze way lift is 0.2～0.4mm.
A kind of float petrol machine exhaust cam shaft molded lines of the present utility model can also be:
Described Base radius is 16mm, described breeze way lift 0.32mm, described cam peach radial center to beginning angle angle folded between the breeze way is 6 °, opening breeze way is 27 ° to eliminating the folded unlatching bumper angle in valve clearance fully, eliminating valve clearance to the folded valve opening angle of described valve maximum lift fully is 57 °, described valve maximum lift to the folded valve-closing angle of described closing flank is 57 °, it is 22 ° that described closing flank finishes the folded bumper angle of closing to described breeze way, described breeze way finish to the folded angle at the end of cam peach radial center be 11 °, described cam center is 23.45mm to described cam peach top distance, and the valve maximum lift is 7.45mm.
A kind of float petrol machine exhaust cam shaft molded lines of the present utility model, in terms of existing technologies, because its described Base radius is 15～17mm, the valve maximum lift is 7～8mm, the breeze way lift is 0.2～0.4mm.Make float petrol machine exhaust cam shaft molded lines of the present utility model can cooperate bent axle-piston motion air inlet, make full use of air inlet inertia, improve charging efficiency, promote the performance of motor.Adopt the speed that flies off of the exhaust cam shaft of this new type of cam axle design to reach 7479rpm, eliminated flying off phenomenon all greater than the maximum speed 6000rpm of this h type engine h.And cam-tappet does not have the inordinate wear phenomenon in actual use.Motor has been realized effects such as high power per liter, high compression ratio, low oil consumption, has improved machine performance greatly.
Description of drawings
A kind of float petrol of Fig. 1 the utility model machine exhaust cam shaft molded lines embodiment schematic representation.
The figure number explanation
1 ... basic circle 2 ... cam peach 16 ... cam peach radial center
17 ... beginning angular segments 18 ... breeze way begins 19 ... open breeze way
20 ... eliminate valve clearance 21 fully ... valve opening section 22 ... the valve maximum lift
23 ... closing flank 24 ... valve closes 25 fully ... close breeze way
26 ... breeze way finishes 27 ... the angle at the end section
28 ... cam center is to cam peach top distance
Embodiment
Be described in further detail below in conjunction with 1 pair of a kind of float petrol machine exhaust cam shaft molded lines of the present utility model of accompanying drawing.
A kind of float petrol machine exhaust cam shaft molded lines of the present utility model, please refer to Fig. 1, comprise basic circle 1 and cam peach 2, described basic circle 1 center of circle overlaps with described cam peach radial center 16, described cam peach 2 is followed successively by beginning angular segments 17, opens breeze way 19, eliminates valve clearance 20, valve opening section 21, valve maximum lift 22, closing flank 23 fully, is closed breeze way 25 and angle at the end section 27 by an end to the other end, described basic circle 1 radius is 15～17mm, valve maximum lift 22 is 7～8mm, and the breeze way lift is 0.2～0.4mm.Concrete, open breeze way 19 for beginning 18 by breeze way to eliminating cam peach 2 profiles between the valve clearance 20 fully, closing flank 23 is cam peach 2 profiles between closing 24 fully by valve maximum lift 22 to valve.Technique scheme makes float petrol machine exhaust cam shaft molded lines of the present utility model can cooperate bent axle-piston motion air inlet, makes full use of air inlet inertia, improves charging efficiency, promotes the performance of motor.Adopt the speed that flies off of the exhaust cam shaft of this new type of cam axle design to reach 7479rpm, eliminated flying off phenomenon all greater than the maximum speed 6000rpm of this h type engine h.And cam-tappet does not have the inordinate wear phenomenon in actual use.Motor has been realized effects such as high power per liter, high compression ratio, low oil consumption, has improved machine performance greatly.
A kind of float petrol machine exhaust cam shaft molded lines of the present utility model, please refer to Fig. 1, further preferably described basic circle 1 radius is 16mm, described breeze way lift 0.32mm, described cam peach radial center 16 to beginning angle angle folded between the breeze way is 6 °, opening breeze way 19 is 27 ° to eliminating valve clearance 20 folded unlatching bumper angles fully, eliminating valve clearance 20 to described valve maximum lift 22 folded valve opening angles fully is 57 °, described valve maximum lift 22 to described closing flank 23 folded valve-closing angles are 57 °, it is 22 ° that described closing flank 23 to described breeze way finishes the 26 folded bumper angles of closing, described breeze way end 26 to cam peach radial center 16 folded angles at the end are 11 °, described cam center is 23.45mm to described cam peach 2 tops distance 28, and valve maximum lift 22 is 7.45mm.The design of cam profile has realized maximum acceleration 0.022mm/deg
2Maximum contact stress is 543.02N/mm between cam-tappet
2The speed of flying off has reached 7479rpm, greater than engine peak speed 6000rpm.Motor has been realized effects such as high power per liter, high compression ratio, low oil consumption, has improved machine performance greatly.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence variation of having done according to the design spirit in the utility model or modification or equal proportion are amplified or are dwindled etc., all should think to fall into protection domain of the present utility model.
Claims (2)
1. float petrol machine exhaust cam shaft molded lines, comprise basic circle and cam peach, the described basic circle center of circle overlaps with described cam peach radial center, described cam peach is followed successively by the beginning angular segments, opens breeze way, eliminates valve clearance, valve opening section, valve maximum lift, closing flank fully, is closed breeze way and angle at the end section by an end to the other end, it is characterized in that: described Base radius is 15～17mm, the valve maximum lift is 7～8mm, and the breeze way lift is 0.2～0.4mm.
2. a kind of float petrol machine exhaust cam shaft molded lines according to claim 1, it is characterized in that: described Base radius is 16mm, described breeze way lift 0.32mm, described cam peach radial center to beginning angle angle folded between the breeze way is 6 °, opening breeze way is 27 ° to eliminating the folded unlatching bumper angle in valve clearance fully, eliminating valve clearance to the folded valve opening angle of described valve maximum lift fully is 57 °, described valve maximum lift to the folded valve-closing angle of described closing flank is 57 °, it is 22 ° that described closing flank finishes the folded bumper angle of closing to described breeze way, described breeze way finish to the folded angle at the end of cam peach radial center be 11 °, described cam center is 23.45mm to described cam peach top distance, and the valve maximum lift is 7.45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202177532U CN201546771U (en) | 2009-09-28 | 2009-09-28 | Low displacement petrol engine exhaust cam axial-type line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202177532U CN201546771U (en) | 2009-09-28 | 2009-09-28 | Low displacement petrol engine exhaust cam axial-type line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546771U true CN201546771U (en) | 2010-08-11 |
Family
ID=42601944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202177532U Expired - Lifetime CN201546771U (en) | 2009-09-28 | 2009-09-28 | Low displacement petrol engine exhaust cam axial-type line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546771U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994579A (en) * | 2010-11-30 | 2011-03-30 | 卓贤成 | Twice air intake and exhaust based high compression ratio combustion engine and operating method thereof |
| CN102486104A (en) * | 2010-12-31 | 2012-06-06 | 上汽通用五菱汽车股份有限公司 | Exhaust cam of small gasoline engine |
| CN102913295A (en) * | 2011-09-21 | 2013-02-06 | 上汽通用五菱汽车股份有限公司 | Molded line structure for camshaft of engine |
| CN104047651A (en) * | 2014-07-04 | 2014-09-17 | 上汽通用五菱汽车股份有限公司 | Admission cam shaft of engine |
| CN106837454A (en) * | 2017-03-23 | 2017-06-13 | 湖南长丰动力有限责任公司 | A kind of 1.5L is pressurized the exhaust cam of directly jetting gasoline engine |
-
2009
- 2009-09-28 CN CN2009202177532U patent/CN201546771U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994579A (en) * | 2010-11-30 | 2011-03-30 | 卓贤成 | Twice air intake and exhaust based high compression ratio combustion engine and operating method thereof |
| CN102486104A (en) * | 2010-12-31 | 2012-06-06 | 上汽通用五菱汽车股份有限公司 | Exhaust cam of small gasoline engine |
| CN102486104B (en) * | 2010-12-31 | 2013-11-06 | 上汽通用五菱汽车股份有限公司 | Exhaust cam of small gasoline engine |
| CN102913295A (en) * | 2011-09-21 | 2013-02-06 | 上汽通用五菱汽车股份有限公司 | Molded line structure for camshaft of engine |
| CN104047651A (en) * | 2014-07-04 | 2014-09-17 | 上汽通用五菱汽车股份有限公司 | Admission cam shaft of engine |
| CN106837454A (en) * | 2017-03-23 | 2017-06-13 | 湖南长丰动力有限责任公司 | A kind of 1.5L is pressurized the exhaust cam of directly jetting gasoline engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201531284U (en) | Air inlet cam shaft line of small-displacement gasoline engine | |
| CN201546771U (en) | Low displacement petrol engine exhaust cam axial-type line | |
| CN102486103B (en) | Air admission cam for small gasoline engine | |
| CN105386864A (en) | Centre-fixed and periphery-rotating device | |
| CN203925637U (en) | The petrolic exhaust cam of a kind of natural aspiration | |
| CN104047651A (en) | Admission cam shaft of engine | |
| CN101865001A (en) | Cam with symmetrical profile lines | |
| CN202273715U (en) | Cam shaft for engine | |
| CN207297164U (en) | A kind of rotary dynamical system based on free-piston | |
| CN204591392U (en) | Variable air valve lift apparatus, motor and automobile | |
| CN110593981A (en) | Intake cam and engine with same | |
| CN201972750U (en) | Air inlet cam of minitype gasoline engine | |
| CN201225183Y (en) | Cam axle and engine used thereby | |
| CN205400836U (en) | Engine inlet cam , engine and vehicle | |
| CN107448282A (en) | A kind of rotary dynamical system based on free-piston | |
| CN202832688U (en) | Cam structure of engine | |
| CN203978608U (en) | Asynchronous twin cylinder engine | |
| CN204511545U (en) | Petrol engine distribution device camshaft | |
| CN103161536A (en) | Center arc type cam mechanism improving average opening degree of combustion motor air valve | |
| CN201972751U (en) | Exhaust cam of miniature gasoline engine | |
| CN207526541U (en) | A kind of exhaust cam shaft of in-line four cylinder turbocharged engine | |
| CN201330653Y (en) | Return-air control mechanism of variable-cylinder energy-saving internal combustion engine | |
| CN201588695U (en) | Curved connecting rod offset crankshaft mechanism | |
| CN105569827A (en) | Two-end-face linear contact system | |
| CN108180047B (en) | Cam group of supercharged direct injection engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |
|
| CX01 | Expiry of patent term |